A General Constrained Adaptive Filtering Algorithm for Channel
Estimation and Beamforming: Analysis and Performance
Abstract
A General Constrained Adaptive Filtering (GCAF) algorithm is proposed
via constructing a general and adaptive loss function to find out a
solution of constraint optimizing problem. By selecting appropriate
parameters, the GCAF algorithm can be utilized to approximate different
adaptive algorithms and has higher performance than its approximated
algorithms. The steady state mean squared-deviation of GCAF algorithm is
derived and analyzed. Also, its complexity is presented. Simulation
results demonstrated that the performance of devised GCAF method can
outperform most of typically adaptive algorithms by choosing optimal
parameters.